Gree GMV-36WL/A-T(U) - Troubleshooting

DC Inverter Side Discharge VRF Ⅱ for North America
95
AA
EU AA class energy
efficiency test mode
AH
Heating
AL
Charge refrigerant
automatically
AE
Charge refrigerant by
hand
AF
Fan blow
AJ
Cleaning alarm for filter
AP
Startup debugging
confirmation of unit
AU
Long-distance emergency
stop
Ab
Emergency stop
Ad
Limit opereation
n0
SE setting for the
operation
n1
Defrosting period K 1
setting
n2
Upper limit setting for
the collocation
matching ratio for
indoor unit and
outdoor unit
n4
Limit setting for the
maximum ouput capacity
n6
Engineering series
number inqury for
indoor unit
n7
Malfunction inquiry
n8
Parameters inquiry
nA
Heat pump unit
nH
Heating only model
nC
Cooling only model
nE
Negative code
nF
Fan model
2 Troubleshooting
Troubleshooting principle
(1) Communication malfunction
Communication
malfunction
Check whether indoor unit and
outdoor unit is power supplied
Energize indoor unit and
outdoor unit
Measure whether the
communication wire is in
normal
Replace communication
wire
NO
NO
Check whether the
communication wire between
indoor unit and outdoor unit is
correct
Connect the communication
wire for indoor unit and
outdoor unit correctly
NO
YES
YES